ETABS 2016 ("License found but license is not valid") typically indicates that the software located a license file, but its contents do not pass validation checks
: Conflicting software using SentinelLM can cause errors. Check your system environment variables for any settings labeled that might be diverting the license request. Administrator Rights : Run the application or the license activator as an Administrator
If the system settings are correct, you must verify if the license file itself is still active.
Ensure your system date is set to MM/DD/YYYY .